61727323849 has 2 divisors, whose sum is σ = 61727323850. Its totient is φ = 61727323848.

The previous prime is 61727323841. The next prime is 61727323859. The reversal of 61727323849 is 94832372716.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60691771449 + 1035552400 = 246357^2 + 32180^2 .

It is a cyclic number.

It is not a de Polignac number, because 61727323849 - 2³ = 61727323841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61727323796 and 61727323805.

It is not a weakly prime, because it can be changed into another prime (61727323841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30863661924 + 30863661925.

It is an arithmetic number, because the mean of its divisors is an integer number (30863661925).

Almost surely, 2^61727323849 is an apocalyptic number.

It is an amenable number.

61727323849 is a deficient number, since it is larger than the sum of its proper divisors (1).

61727323849 is an equidigital number, since it uses as much as digits as its factorization.

61727323849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 52.

The spelling of 61727323849 in words is "sixty-one billion, seven hundred twenty-seven million, three hundred twenty-three thousand, eight hundred forty-nine".